Home / 440,581.28-660,872.40-120,735.88

Finding the Fourth Proportional to 440,581.28, 660,872.40 and 120,735.88

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Solution

The fourth proportional to 440,581.28, 660,872.40 and 120,735.88 is: 181,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,581.28 : 660,872.40 = 120,735.88 : x
  2. Step 2: Convert to fraction form
    440,581.28/660,872.40 = 120,735.88/x
  3. Step 3: Cross multiply
    440,581.28x = 660,872.40 × 120,735.88
  4. Step 4: Simplify right side
    440,581.28x = 79,791,010,781.71
  5. Step 5: Solve for x
    x = 79,791,010,781.71/440,581.28
  6. Step 6: Final answer
    x = 181,103.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.